LSD: Trends in Friends Disapproval as Perceived by 12th Graders

(Percentages saying friends disapprove)
  1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019   2018 -
2019
Change
  2014 -
2019
Change
Proportional
Change
  Peak year -
2019
Change
Proportional
Change
  Low year -
2019
Change
Proportional
Change
Trying 1 or 2 times 12th Grade . 84.6 . 85.6 87.4 86.5 87.8 87.8 87.6 88.6 89.0 87.9 89.5 88.4 87.9 87.9 87.3 83.5 83.4 82.6 80.8 79.3 81.7 83.2 84.7 85.5 84.9 87.5 87.3 88.4 89.5 88.4 86.3 87.2 84.5 85.6 85.0 84.9 84.6 81.9 83.3 81.3 82.7 81.3 | -1.4 | -3.3 -3.9 | -8.2*** -9.1 | 0.0 0.0

Source: The Monitoring the Future study, the University of Michigan.
Answer alternatives were: (1) Does not disapprove, (2) Disapprove, (3) Strongly disapprove. Percentages are shown for categories (2) and (3) combined.
The year with the highest percentage of those saying great risk is noted in bold. The year with the lowest percentage after that peak is underlined.
For a table of Ns click here: Notes
*** = p < 0.001 ** = p < 0.01 * = p < 0.05